R-Value Recommendations for Existing Buildings for the St Louis Area

10.14.2010

R-Value Recommendations for Existing Buildings for the St Louis Area

R-Value Recommendations for Existing Buildings for the St Louis Area

DOE/CE-0180
January 2008
Department of Energy
Assistant Secretary
Energy Efficiency and Renewable Energy

Heating System: Natural Gas Furnace
Cooling System: Electric Air Conditioning
First 3 digits of ZIP code: 631
Location: Saint_Louis, MO

Insulation Location	R-Value^*	Notes
Attic	49	-
Wood frame wall cavity	13	Blow insulation into any uninsulated exterior wall cavity.
Floor	30	Over unheated, uninsulated space.
Crawl space wall	25	Crawl space walls are only insulated if the crawl space is unvented and the floor above the crawl space is uninsulated.
Basement wall interior	11	-
Insulative sheathing on empty wall	5	Recommendation assumes that the exterior siding was removed for other purpose, i.e., does not include any consideration of the cost of removing and replacing the exterior siding.
Add insulative sheathing to R11 wall	5

^* R-values have units of F-ft²-h/Btu. The recommended R-values were produced using the ZIP-Code computer program. The recommendations are based on an analysis of cost effectiveness, using average local energy prices, regional average insulation costs, equipment efficiencies, climate factors, and energy savings for both the heating and cooling seasons.

If you are interested in Green Building on an Investment Property Check out the Benton Gut Rehab Blog Series-Benton Gut Rehab Green Blog Series

Part 1: History

Part 2: Stone Foundation Repair

Part 3: Tuckpointing the Brick Walls pt 1

Part 4: Tuckpointing the Brick Walls pt 2

Part 5: What were they thinking?

Part 6: Paint Pro Tip #35

Part 7: Repairing Water Damage-Exterior Wall

Scotts Contracting - StLouis Renewable Energy

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10.14.2010